Rosai-Dorfman Disease: A Case Report of Asymptomatic Isolated Renal Involvement

Rosai-Dorfman disease (RDD) is a rare non-malignant histiocytosis disorder, commonly manifesting with massive painless cervical lymphadenopathy. Renal involvement develops in only four percent of patients with RDD. Generally, RDD is self-limiting and has a good prognosis; however, in patients with renal involvement, mortality rate can be as high as 40%.